Automatic train-stopping device.



D. D. GOOD.

AUTOMATIC TRAIN STOPPING DEVICE.

APPLICATION FILED OCT. 14. 1915.

a w mmn Patented Feb.18,1919.

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ATTORNEY.

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DAVID D. GOOD, PHILADELPHIA, PENNSYLVANTA.

AUTOMATIC TRAIN-STOPPING- DEVICE.

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To all whom it may concem:

Be it known that 1, DAVID D. Goonxa citizen of the United States, residing at my invention may be applied to stop levers and control levers of automatiotrain stopping devices such as are described in my applications for Letters Patent #4:,945, automatic speed control, filed January 28th,

1915, and #835,652, automatic train stopping device, filed May 1st, .1914, and to other essential parts or a train, such as the wheels, axles, etc.

Throughout the accompanying drawing similar letters and figures refer to similar parts. On inspection of the above mentioned applications it will be seen that the numeral references herein refer'to similar parts illustrated in those applications and that the letters refer to the new matter constituting-my improvement.

Figure 1 is a broken vertical elevatlon and section of a part of an automatic speed control with my improvement added thereto.

Fig. 2 is a horizontal sectional view of control lever on the line Y X, Fig. 1.

Fig. 3 is a plane side elevation of a shoe carried by a train.

Fig. 4; a horizontal cross sectionon the line V W, Fig. 3, through the stem of the shoe. 1 I

Fig. 5 is a vertical cross section through the base of the shoe on the line 0 P.

Fig. 6 is a broken rear elevatlon and section through the knuckle joint of the shoe and on a perpendicular plane to that of The valve block 1, the webs 5, 6 and 7 and the table 8 form art of the frame work of a speed controlling device attached to a vehicle equipped with air brakes.

The stop lever 13 is des1gned to be turned by a tripping device placed ad acent to the track. The circular members 18 and 20. which are permanently attached to the stop lever, turn in bearings in the webs 6 and 7.

Specification of Iietters Patent.

Patented Feb. 118, 19112.

Application filed October 14, 1915. Serial No. 55,830.

When the stop lever is turned on its pivot thus formed, the cams 11, which are similar to the cams 11 shown in Fig. 2, operate to open a valve in the port 77 which is connected to the brake line and thus bring the train to a full stop.

.The'control lever slides vertically on the pivot 21 and operates a valve in the port 78 in a similar manner. These valves and their operation are not shown or described as they have no direct relation tothe improvement now to be discussed.

The port 78 may be any port in a valve blockleadingdirectly to the air brake line of a vehicle or train. Connected with and leading from the port 78, a port e'leadS downward through the valve block 1; from thence a port 1 leads outward through the web 5 and around the bearing in which the circular member 22 of the pivot 21 turns. The end of this port is closed, forming in effect a hollow web with its only outlet at 5-. The outlet 5 is provided with a connection for a flexible hose The opposite" end of the hose 9 is connected at h with the control lever 10. The control lever 10 is of hollow construction or provided with ports h and h. The said hollow portion or ports are connected to or open into the flexible hose 9. It will'be seen that, as these airways have no opening, so long as the parts remain mtact, the compressed airin the air brake line will not be allowed to escape through them but that immediately on their being fractured or broken, through any cause wha'teventhe air under compression in the air brake line of the vehicle, will escape and set the brakes in the usual manner.

The same result is obtainedrby a similar construction of the stop lever 13. From a port 7 8 in the valve block 1, the port a leads upward to the ort b which leads outward through the weld seat. A conical member attached to or forming a part of the stop lever 13 turns in this seat and is provided with a groove 0' around its face. Ports 0 extend. from the groove 0 to the center of the member under discussion and upward to a meeting with the longitudinal port d in the stop Y lever 13.

6 to the conically ground collar 7 is formed. Into this collar, an externally threaded hollow nut is screwed the air brake line of the vehicle at all times regardless of the direction in which the handle is turned. If the stop lever should be broken by contact with a tripping device or any other object, the airfrom the brake line would escape through the fracture and set the brakes on the vehicle.

A shoe, on a vehicle or train, for the 'o eration of signals or automatic tripping evices and which is an essential part of my invention may be provided with my improvement. As it is sometimes desirable that such shoes have a knuckle joint in order that they may turn forward and upward when the vehicle backs past a signal or trip, I have illustrated one of this character in Figs. 3, 4, 5 and 6. y

A block 3, attachable to a vehicle by the eyes i, has a threaded pipe connection attached to it. This connection rovides means of connecting the horizonta port It in the block with the air brake line of the vehicle.

A conical projection Z, fixed to the block 3, forms a pivot which is ground to fit a 'conical opening in the sleeve 0. A port .ex-

tends outward from the port 1: through the conical projection l and connects with the vertical' port m. .The latter terminates in a groove n, cut around the cone l. The sleeve 0 is held in place by the nut g which screws on a threaded extension on the cone Z.

Attached to the sleeve 0 is a stem, formed of the perpendicular. webs p and q; The

web 9 extends down to and is attached to the base 2 of the shoe. The web p is extended longitudinally to form the webs Q) and w and strengthen the base 2.

The lug m is attached to the block 3, extends outward beyond the inside edge of the web 9 and prevents the shoe from turning backward beyond the vertical.

A groove n extends around the inside "of the sleeve 0 and registers with the groove on the cone Z. From'the roove at, an? air ports extends downward-t rough the center of the stem and connects with the longitudinal ports t and 'u. I

When the construction necessitates the drilling of the ports or leaving sand openings in casting, the ends of the ports are closed by screw plugs z.

By the construction of a shoe with the safety ports as described, it will be seen that, should the shoe be broken or torn loose from the vehicle in such a way that it might fail to operate signals or tripping devices, a direct opening would be made througlhito the air "brake line and allow the air under compression therein to escape into the, atmos'phere and set the air brakes.

Having thus described my invention, I

claim as novel:

In an automatic train stopping device the combination with the air brake line, an

a valve block connected thereto, of'a port or air way extending from the air brake line through said valve block, a hose connection, a vertically sliding control lever of hollow design and a flexible hose or tube adapted to connect the two and form' a continuous air way from the air brake line to the hollow lever and allow the latter to move on its pivot, substantially as described.

DAVID D. Goon. Witnesses Ln'rrrm W. Goon, Bose KENIN. 

